Driver Information Center (DIC) Switch Inoperative. GMC Truck Envoy

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2006 🢒 Envoy - 4WD 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Driver Information Center (DIC) Switch Inoperative

Step	Action	Yes	No
Schematic Reference: Instrument Cluster Schematics Connector End View Reference: Instrument Panel, Gages, and Console Connector End Views
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2	Install a scan tool. Turn ON the ignition, with the engine OFF. Press and release each of the driver information center (DIC) switches. With a scan tool, observe the DIC switch parameters in the instrument panel cluster (IPC) Inputs/Outputs. Does the scan tool display On when each switch is pressed and Off when each switch is released?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Does the scan tool display Off when each switch is pressed?	Go to Step 9	Go to Step 4
4	Does the scan tool always display On for the suspect switch even when the switch is released?	Go to Step 5	Go to Step 6
5	Turn OFF the ignition. Disconnect the DIC switch connector. Turn ON the ignition, with the engine OFF. With a scan tool, observe the suspect DIC switch parameter. Does the scan tool display On for the suspect switch?	Go to Step 7	Go to Step 12
6	Turn OFF the ignition. Disconnect the DIC switch connector. Connect a 3-amp fused jumper wire between the signal circuit of the suspect DIC switch and a good ground. Refer to Circuit Testing in Wiring Systems. Turn ON the ignition, with the engine OFF. With a scan tool, observe the suspect DIC switch parameter. Does the scan tool display On for the suspect switch?	Go to Step 10	Go to Step 8
7	Test the signal circuit of the suspect DIC switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 11
8	Test the signal circuit of the suspect DIC switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 11
9	Test the ground circuit of the DIC switch for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 10
10	Inspect for poor connections at the harness connector of the DIC switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 12
11	Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 13
12	Replace the DIC switch. Refer to Steering Wheel Control Switch Assembly Replacement in Steering Wheel and Column. Did you complete the replacement?	Go to Step 14	--
13	Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming . Did you complete the replacement?	Go to Step 14	--
14	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2